Results 61 to 70 of about 7,373 (259)

Astyanax hastatus Myers, 1928 (Teleostei, Characidae): a new species complex within the genus Astyanax? [PDF]

, 2008
Four populations of Astyanax hastatus Myers 1928 from the Guapimirim River basin (Rio de Janeiro State) were analyzed and three distinct cytotypes identified.
ALMEIDA-TOLEDO, Lurdes Foresti de, BRANDÃO, Karina de Oliveira, KAVALCO, Karine Frehner, PAZZA, Rubens   +3 more
core   +4 more sources

Evaluation of Tributyltin Subchronic Effects in Tropical Freshwater Fish (Astyanax bimaculatus, Linnaeus, 1758)

Ecotoxicology and Environmental Safety, 2002
Tributyltin (TBT) is widely used as a biocide in antifouling paints. Astyanax bimaculatus adult fish were acclimatized in a laboratory and isolated in groups of eight individuals. Two groups were used as a control (similar handling and corn oil control) and one group was exposed to TBTCI dissolved in corn oil (0.0688 +/- 0.0031 microg TBT.g(-1)) every ...
C A, Oliveira Ribeiro, M, Schatzmann, H C, Silva de Assis, P H, Silva, E, Pelletier, F M, Akaishi   +5 more
openaire   +2 more sources

Karyotypic diversity among three species of the genus Astyanax (Characiformes: Characidae)

Brazilian Journal of Biology
The group Incertae sedis within the Characidae family currently includes 88 genera, previously included in the subfamily Tetragonopterinae. Among them is the genus Astyanax comprising a group of species with similar morphology and widely distributed in ...
P. B. Nishiyama, M. M. R. Vieira, F. E. Porto, L. A. Borin, A. L. B. Portela-Castro, I. C. M. Santos   +5 more
doaj   +1 more source

Biomonitoramento de metais pesados no Córrego do Cravo e Represa Paraíso utilizando Astianax bimaculatus (Linnaeus, 1758) (Characiformes, Characidae)

Agrarian, 2012
As áreas utilizadas como lixões e aterros controlados são focos potenciais de poluição, uma vez que os resíduos sólidos podem conter substâncias químicas com características tóxicas, como os metais pesados por exemplo.
Samuel Mariano-da-Silva, Antonio Paulino Costa Netto, César Augusto Oliveira, Francys Pimenta de Faria, Fabiana Maria de Siqueira Mariano-da-Silva   +4 more
doaj   +1 more source

Dietary probiotic Lactobacillus sp. for yellow tail tetra Astyanax bimaculatus reared at high and low stocking densities improved the feed conversion ratio, final yield, and intestinal morphometry

Ciência Rural
: The present study evaluated the growth performance, survival, feed conversion ratio, intestinal morphometry, and final yield of yellow tail tetra Astyanax bimaculatus after dietary supplementation with the probiotic Lactobacillus sp. at a concentration
M. Owatari, N.B. Lehmann, M. O. Pereira, A. V. Moraes, A. Jatobá   +4 more
semanticscholar   +1 more source

Effect of timing of hormonal induction on reproductive activity in lambari (Astyanax bimaculatus)

Theriogenology, 2012
The objective was to evaluate the influence of the timing of hormonal induction, using gonadorelin or common carp pituitary extract (CPE), on the reproductive activity of female Astyanax bimaculatus. Fish (N = 44) were weighed, measured, and acclimatized to experimental conditions with a photoperiod of 12 h:12 h light:dark (L:D) for 10 days.
Felizardo, V. O., Murgas, L. D. S., Andrade, E. S., López, P. A., Freitas, R. T. F., Ferreira, M. R.   +5 more
openaire   +2 more sources

Morfologia e desenvolvimento do núcleo vitelínico do lambari Astyanax bimaculatus (Linnaeus, 1758) (Osteichthyes, Characidae) [PDF]

Revista Brasileira de Zoologia, 1990
A morphological study of the yolk nucleus in previtellogenic oocytes from A. bimacularus has been carried out. Six phases of development were described from its formation closed to the oocyte nucleus to its dispersion in the periferic ooplasm. Histochemical techniques indicate proteins, lipids and RNA in the yolk nucleus of A.
Cangussu-Mariani, Silvia Dantas, Rizzo, Elizete, Bazzoli, Nilo   +2 more
openaire   +3 more sources

Insect meals in fish nutrition

Reviews in Aquaculture, Volume 11, Issue 4, Page 1080-1103, November 2019., 2019
Abstract Different studies have shown that insect meals can partially or completely replace the fish and soya bean meals that are commonly used in aquaculture. However, information is lacking on the amino acid and fatty acid contents and digestibility of different insect meals. Moreover, we evaluated different proportions of insect diets and determined
Silvia Nogales‐Mérida, Paola Gobbi, Damian Józefiak, Jan Mazurkiewicz, Krzysztof Dudek, Mateusz Rawski, Bartosz Kierończyk, Agata Józefiak   +7 more
wiley   +1 more source

Trends in Medicinal Uses of Edible Wild Vertebrates in Brazil

Evidence-Based Complementary and Alternative Medicine, Volume 2017, Issue 1, 2017., 2017
The use of food medicines is a widespread practice worldwide. In Brazil, such use is often associated with wild animals, mostly focusing on vertebrate species. Here we assessed taxonomic and ecological trends in traditional uses of wild edible vertebrates in the country, through an extensive ethnobiological database analysis. Our results showed that at
Rômulo Romeu Nóbrega Alves, Tacyana Pereira Ribeiro Oliveira, Maria Franco Trindade Medeiros, Ghee T. Tan   +3 more
wiley   +1 more source

CLOFFAR - update 3 - supplement to Checklist of the Freshwater Fishes of Argentina [PDF]

, 2017
In May 2016 we have published the second update to CLOFFAR and in these few months a total of 22 changes have summed up. The total number of fishes known from the freshwaters of Argentina has increased to 538, caused by one new Hoplias and 13 first ...
Koerber, Stefan, Litz, Thomas O., Mirande, Juan Marcos   +2 more
core